@qualweb/wcag-techniques
Version:
Implementation of the WCAG 2.1 techniques
1 lines • 466 kB
JavaScript
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the html element, there is no mismatch between the primary language in non-empty lang and xml:lang attributes, if both are used.",results:{I1:"No test targets found.",P1:"The `lang` and `xml:lang` attributes have the same value.",F1:"The `lang` and `xml:lang` attributes don't have the same value."}},"QW-ACT-R4":{name:"Meta-refresh no delay",description:"This rule checks that the meta element is not used for delayed redirecting or refreshing.",results:{I1:"No test targets found.",P1:"The test target refreshes/redirects immediately.",P2:"The test target refreshes/redirects after more than 20 hours.",F1:"The test target refreshes after {seconds} seconds.",F2:"The test target redirects after {seconds} seconds."}},"QW-ACT-R5":{name:"Validity of HTML Lang attribute",description:"This rule checks the lang or xml:lang attribute has a valid language subtag.",results:{I1:"No test targets found.",P1:"The `lang` attribute has a valid value.",F1:"The `lang` attribute does not have a valid value."}},"QW-ACT-R6":{name:"Image button has accessible name",description:"This rule checks that each image button element has an accessible name.",results:{I1:"No test targets found.",P1:"The test target has an accessible name.",F1:"The test target doesn't have an accessible name."}},"QW-ACT-R7":{name:"Orientation of the page is not restricted using CSS transform property",description:"This rule checks that page content is not restricted to either landscape or portrait orientation using CSS transform property.",results:{I1:"No test targets found.",P1:"A page where CSS transform property has rotateZ transform function conditionally applied on the orientation media feature which does not restrict the element to either portrait or landscape orientation.",F1:"A page where CSS transform property has rotate transform function conditionally applied on the orientation media feature which restricts the element to landscape orientation."}},"QW-ACT-R9":{name:"Links with identical accessible names have equivalent purpose",description:"This rule checks that links with identical accessible names resolve to the same resource or equivalent resources.",results:{I1:"No test targets found.",P1:"The `links` with the same accessible name have equal content.",F1:"The `links` with the same accessible name have different content. Verify is the content is equivalent."}},"QW-ACT-R10":{name:"`iframe` elements with identical accessible names have equivalent purpose",description:"This rule checks that `iframe` elements with identical accessible names embed the same resource or equivalent resources.",results:{I1:"No test targets found.",P1:"The `iframes` with the same accessible name have equal content.",F1:"The `iframes` with the same accessible name have different content."}},"QW-ACT-R11":{name:"Button has accessible name",description:"This rule checks that each button element has an accessible name.",results:{I1:"No test targets found.",P1:"The test target has an accessible name.",F1:"The test target doesn't have an accessible name, or it's empty ('')."}},"QW-ACT-R12":{name:"Link has accessible name",description:"This rule checks that each link has an accessible name.",results:{I1:"No test targets found.",P1:"The test target has an accessible name.",F1:"The test target doesn't have an accessible name, or it's empty ('')."}},"QW-ACT-R13":{name:"Element with `aria-hidden` has no focusable content",description:"This rule checks that elements with an aria-hidden attribute do not contain focusable elements.",results:{I1:"No test targets found.",P1:"The test target children are not focusable.",P2:"The test target is not focusable.",F1:"The test target has focusable children.",F2:"This test target is focusable."}},"QW-ACT-R14":{name:"meta viewport does not prevent zoom",description:"This rule checks that the meta element retains the user agent ability to zoom.",results:{I1:"No test targets found.",P1:"The `meta` element with a `name='viewport'` attribute doesn't define the `maximum-scale` and `user-scalable` values.",P2:"The `meta` element with a `name='viewport'` attribute retains the user agent ability to zoom.",F1:"The `meta` element with a `name='viewport'` attribute abolishes the user agent ability to zoom with user-scalable=no or maximum-scale < 2."}},"QW-ACT-R15":{name:"audio or video has no audio that plays automatically",description:"This rule checks that auto-play audio does not last for more than 3 seconds, or the audio has a control mechanism to stop or mute it.",results:{I1:"No test targets found.",P1:"The rule passed because of the rule ",W1:"The rule can't tell because of the rule ",F1:"The rule failed because of the rule "}},"QW-ACT-R16":{name:"Form control has accessible name",description:"Form control has accessible name",results:{I1:"No test targets found.",P1:"The test target has an accessible name.",F1:"The test target accessible name doesn't exist or it's empty ('')."}},"QW-ACT-R17":{name:"Image has accessible name",description:"This rule checks that each image that is not marked as decorative, has an accessible name.",results:{I1:"No test targets found.",P1:"The test target is decorative.",P2:"The test target has an accessible name.",F1:"The test target doesn't have an accessible name."}},"QW-ACT-R18":{name:"`id` attribute value is unique",description:"This rule checks that all id attribute values on a single page are unique.",results:{I1:"No test targets found.",P1:"The test target has a unique `id` attribute.",F1:"Several elements have the same `id` attribute."}},"QW-ACT-R19":{name:"iframe element has accessible name",description:"This rule checks that each iframe element has an accessible name.",results:{I1:"No test targets found.",P1:"The test target has an accessible name.",F1:"The test target accessible name doesn't exist or it's empty ('')."}},"QW-ACT-R20":{name:"role attribute has valid value",description:"This rule checks that each role attribute has a valid value.",results:{I1:"No test targets found.",P1:"The test target has a valid `role` attribute.",F1:"The test target has an invalid `role` attribute."}},"QW-ACT-R21":{name:"svg element with explicit role has accessible name",description:"This rule checks that each SVG image element that is explicitly included in the accessibility tree has an accessible name.",results:{I1:"No test targets found.",P1:"The test target has an accessible name.",F1:"The test target accessible name doesn't exist or it's empty ('')."}},"QW-ACT-R22":{name:"Element within body has valid lang attribute",description:"This rule checks that the lang attribute of an element in the page body has a valid primary language subtag.",results:{I1:"No test targets found.",P1:"The test target has a valid `lang` attribute.",F1:"The test target has an invalid `lang` attribute."}},"QW-ACT-R23":{name:"video element visual content has accessible alternative",description:"This rule checks that video elements with audio have an alternative for the video content as audio or as text.",results:{I1:"No test targets found.",P1:"The rule passed because of the rule ",W1:"The rule can't tell because of the rule ",F1:"The rule failed because of the rule "}},"QW-ACT-R24":{name:"autocomplete attribute has valid value",description:"This rule checks that the HTML autocomplete attribute has a correct value.",results:{I1:"No test targets found.",P1:"The test target has a valid `autocomplete` attribute.",F1:"The test target `autocomplete` attribute is not valid."}},"QW-ACT-R25":{name:"ARIA state or property is permitted",description:"This rule checks that WAI-ARIA states or properties are allowed for the element they are specified on.",results:{I1:"No test targets found.",P1:"The `{attr}` property is supported or inherited by the `role` {role}.",F1:"The `{attr}` property is neither inherited nor supported by the `role` {role}."}},"QW-ACT-R26":{name:"video element auditory content has accessible alternative",description:"This rule checks that video elements have an alternative for information conveyed through audio.",results:{I1:"No test targets found.",P1:"The rule passed because of the rule ",W1:"The rule can't tell because of the rule ",F1:"The rule failed because of the rule "}},"QW-ACT-R27":{name:"aria-* attribute is defined in WAI-ARIA",description:"This rule checks that each aria-* attribute specified is defined in ARIA 1.1.",results:{I1:"No test targets found.",P1:"All aria-* attributes in this element are defined in ARIA 1.1.",F1:"One or more aria-* attributes are not defined in ARIA 1.1."}},"QW-ACT-R28":{name:"Element with role attribute has required states and properties",description:"This rule checks that elements that have an explicit role also specify all required states and properties.",results:{I1:"No test targets found.",P1:"The test target required attributes are listed.",P2:"The test target `role` doesn't have required state or property",F1:"The test target has unlisted required states or properties."}},"QW-ACT-R29":{name:"Audio element content has text alternative",description:"This rule checks if audio only elements have a text alternative available.",results:{I1:"No test targets found.",P1:"The rule passed because of the rule ",W1:"The rule can't tell because of the rule ",F1:"The rule failed because of the rule "}},"QW-ACT-R30":{name:"Visible label is part of accessible name",description:"This rule checks that interactive elements labeled through their content have their visible label as part of their accessible name.",results:{I1:"No test targets found.",P1:"The complete visible text content of the test target either matches or is contained within its accessible name.",F1:"The test target doesn't have an accessible name.",F2:"The complete visible text content of the test target neither matches or is contained within its accessible name."}},"QW-ACT-R31":{name:"Video element visual-only content has accessible alternative",description:"This rule checks that video elements without audio have an alternative available.",results:{I1:"No test targets found.",P1:"The rule passed because of the rule ",W1:"The rule can't tell because of the rule ",F1:"The rule failed because of the rule "}},"QW-ACT-R32":{name:"video element visual content has strict accessible alternative",description:"This rule checks that video elements with audio have audio description.",results:{I1:"No test targets found.",P1:"The rule passed because of the rule ",W1:"The rule can't tell because of the rule ",F1:"The rule failed because of the rule "}},"QW-ACT-R33":{name:"ARIA required context role",description:"This rule checks that an element with an explicit semantic role exists inside its required context.",results:{I1:"No test targets found.",P1:"The test target parent has the required context `role`.",F1:"The test target parent doesn't have the required context `role`."}},"QW-ACT-R34":{name:"ARIA state or property has valid value",description:"This rule checks that each ARIA state or property has a valid value.",results:{I1:"No test targets found.",P1:"The test target `{attr}` attribute has a valid value.",F1:"The test target `{attr}` attribute has an invalid value."}},"QW-ACT-R35":{name:"Heading has accessible name",description:"This rule applies to any HTML element with the semantic role of heading that is included in the accessibility tree.",results:{I1:"No test targets found.",P1:"The test target has a non-empty accessible name.",F1:"The test target accessible name doesn't exist or it's empty ('')."}},"QW-ACT-R36":{name:"Headers attribute specified on a cell refers to cells in the same table element",description:"This rule checks that the headers attribute on a cell refer to other cells in the same table element with a semantic role of columnheader or rowheader.",results:{I1:"No test targets found.",P1:"All headers attributes refer to a cell with a semantic role of columnheader of rowheader within the same table.",F1:"The headers attribute `{attr}` refers to an ID that does not exist within the same table.",F2:"The headers attribute `{attr}` refers to an element inside the same table which does not have a role of rowheader or columnheader."}},"QW-ACT-R37":{name:"Text has minimum contrast",description:"This rule checks that the highest possible contrast of every text character with its background meets the minimal contrast requirement.",results:{I1:"No test targets found.",P1:"Element has contrast ratio higher than minimum.",P2:"Element doesn't have human language text.",P3:"Element has gradient with contrast ratio higher than minimum.",W1:"Element has text-shadow that needs manual verification.",W2:"Element has an image on background.",W3:"Element has an gradient that we can't verify.",F1:"Element has contrast ratio lower than minimum.",F2:"Element has gradient with contrast ratio lower than minimum."}},"QW-ACT-R38":{name:"ARIA required owned elements",description:"This rule checks that an element with an explicit semantic role has at least one of its required owned elements.",results:{I1:"No test targets found.",P1:"The test target only owns elements with correct role.",F1:"The test target owns elements that doesn't have the correct role."}},"QW-ACT-R39":{name:"All table header cells have assigned data cells",description:"This rule checks that each table header has assigned data cells in a table element.",results:{I1:"No test targets found.",P1:"The column header element has at least one assigned cell.",F1:"The column header element does not have at least one assigned cell."}},"QW-ACT-R40":{name:"Zoomed text node is not clipped with CSS overflow",description:"This rule checks that text nodes are not unintentionally clipped by overflow, when a page is zoomed to 200% on 1280 by 1024 viewport.",results:{I1:"No test targets found.",W1:"Check if each ancestor or the text node is not clipped by overflow."}},"QW-ACT-R41":{name:"Error message describes invalid form field value",description:"This rule checks that text error messages provided when the user completes a form field with invalid values or using an invalid format, identify the cause of the error or how to fix the error.",results:{I1:"No test targets found.",W1:"Check that text error messages provided, identify the cause of the error or how to fix the error."}},"QW-ACT-R42":{name:"Object element has non-empty accessible name",description:"This rule checks that each `object` element has a non-empty accessible name.",results:{I1:"No test targets found.",P1:"The test target has a non-empty accessible name.",F1:"The test target accessible name doesn't exist or it's empty ('')."}},"QW-ACT-R43":{name:"Scrollable element is keyboard accessible",description:"This rule checks that scrollable elements can be scrolled by keyboard",results:{I1:"No test targets found.",P1:"This scrollable section element is included in sequential focus navigation.",F1:"This vertically/horizontally scrollable section element is not included in sequential focus navigation, nor does it have any descendants that are."}},"QW-ACT-R44":{name:"Links with identical accessible names and context serve equivalent purpose",description:"This rule checks that links with identical accessible names and context resolve to the same or equivalent resources.",results:{I1:"No test targets found.",P1:"The `links` with the same accessible name have equal content.",W1:"The `links` with the same accessible name have different content. Verify is the content is equivalent."}},"QW-ACT-R48":{name:"Element marked as decorative is not exposed",description:"This rule checks that elements marked as decorative either are not included in the accessibility tree, or have a presentational role.",results:{I1:"No test targets found.",P1:"The test target is not in the accessibility tree.",F1:"The test target is in the accessibility tree."}},"QW-ACT-R49":{name:"Audio or video that plays automatically has no audio that lasts more than 3 seconds",description:"audio or video that plays automatically does not output audio for more than 3 seconds.",results:{I1:"No test targets found.",P1:"The test target plays for 3 seconds or less.",W1:"Can't collect data from the test target element.",W2:"Check if test target has a visible control mechanism."}},"QW-ACT-R50":{name:"audio or video that plays automatically has a control mechanism",description:"audio or video that plays automatically must have a control mechanism.",results:{I1:"No test targets found.",P1:"The test target has a visible control mechanism.",W1:"Can't collect data from the test target element.",W2:"Check if test target has a visible control mechanism."}},"QW-ACT-R51":{name:"video element visual-only content is media alternative for text",description:"This rule checks non-streaming silent video is a media alternative for text on the page.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"Check that the content in the video matches the information in the text."}},"QW-ACT-R52":{name:"video element visual-only content has description track",description:"This rule checks that description tracks that come with non-streaming video elements, without audio, are descriptive.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"Check if visual content has an accessible alternative."}},"QW-ACT-R53":{name:"video element visual-only content has transcript",description:"Non-streaming video elements without audio must have all visual information available in a transcript.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"Check if visual content has an accessible alternative."}},"QW-ACT-R54":{name:"video element visual-only content has audio track alternative",description:"Non-streaming video elements without audio must have an audio alternative.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"Check if visual content has an accessible alternative."}},"QW-ACT-R55":{name:"video element visual content has audio description",description:"This rule checks that non-streaming video elements have all visual information also contained in the audio.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"The test target has a sound track but we can't verify the volume. Check if the test target has audio and if it does check if visual content has an accessible alternative."}},"QW-ACT-R56":{name:"video element content is media alternative for text",description:"This rule checks non-streaming video is a media alternative for text on the page.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"Check that the content in the video matches the information in the text."}},"QW-ACT-R57":{name:"video element visual content has description track",description:"This rule checks that description tracks that come with non-streaming video elements are descriptive.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"The test target has a sound track but we can't verify the volume. Check if the test target has audio and if it does check if visual content has an accessible alternative."}},"QW-ACT-R58":{name:"audio element content has transcript",description:"Non-streaming audio elements must have a text alternative for all included auditory information.",results:{I1:"No test targets found.",W1:"Check if the test target audio has text-alternative."}},"QW-ACT-R59":{name:"audio element content is media alternative for text",description:"This rule checks audio is a media alternative for text on the page.",results:{I1:"No test targets found.",W1:"Check that the content in the audio matches the information in the text."}},"QW-ACT-R60":{name:"video element auditory content has captions",description:"This rule checks that captions are available for audio information in non-streaming video elements.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"The test target has a sound track but we can't verify the volume. Check if the test target has audio and if it does check if audio content has matching captions."}},"QW-ACT-R61":{name:"Audio and visuals of video element have transcript",description:"This rule checks that non-streaming video elements have all audio and visual information available in a transcript.",results:{I1:"No test targets found.",W1:"Can't collect data from the test target.",W2:"The test target has a sound track but we can't verify the volume. Check if the test target has audio and a transcript. If it does check if the transcript contains all the visual and audio information of the video."}},"QW-ACT-R62":{name:"Element in sequential focus order has visible focus",description:"This rule checks that each element in sequential focus order has some visible focus indication.",results:{I1:"No test targets found.",W1:"Check if the element has some visible focus indication"}},"QW-ACT-R63":{name:"Document has a landmark with non-repeated content",description:"This rule checks that each page has an element with a landmark semantic role starting with non-repeated content",results:{I1:"No test targets found.",P1:"The page doesn't have repeated content.",W1:"Check either there is no non-repeated content after repeated content or there exists an element for which all the following are true: - the element has semantic role inheriting from landmark; and - the first perceivable content (in tree order in the flat tree) which is an inclusive descendant of the element is non-repeated content after repeated content; and - the element is included in the accessibility tree."}},"QW-ACT-R64":{name:"Document has heading for non-repeated content",description:"This rule checks that the non-repeated content contains a heading",results:{I1:"No test targets found.",P1:"The page doesn't have repeated content.",W1:"Check either there is no non-repeated content after repeated content or there exists an element for which all the following are true: - the element is non-repeated content after repeated content; and - the element has a semantic role of heading; and - the element is visible; and - the element is included in the accessibility tree."}},"QW-ACT-R65":{name:"Element with presentational children has no focusable content",description:"This rule checks that elements with a role that makes its children presentational do not contain focusable elements.",results:{I1:"No test targets found.",P1:"The element doesn't have descendants in the flat tree that are part of sequential focus navigation.",F1:"The element has descendants in the flat tree that are part of sequential focus navigation."}},"QW-ACT-R66":{name:"Menuitem has non-empty accessible name",description:"This rule checks that each element with a menuitem role has a non-empty accessible name.",results:{I1:"No test targets found.",P1:"The test target has a non-empty accessible name.",F1:"The test target accessible name doesn't exist or it's empty ('')."}},"QW-ACT-R67":{name:"Letter spacing in style attributes is not !important",description:"This rule checks that the style attribute is not used to prevent adjusting letter-spacing by using !important, except if it's at least 0.12 times the font size.",results:{I1:"No test targets found.",P1:"The letter-spacing property is not !important.",P2:"The letter-spacing is at least 0.12 times the font-size.",P3:"The cascaded letter-spacing is not the declared value.",F1:"CSS styles prevent the letter-spacing to be above the minimum value."}},"QW-ACT-R68":{name:"Line height in style attributes is not !important",description:"This rule checks that the style attribute is not used to prevent adjusting line-height by using !important, except if it's at least 1.5 times the font size.",results:{I1:"No test targets found.",P1:"The line-height property is not !important.",P2:"The line-height is at least 1.5 times the font-size.",P3:"The cascaded line-height is not the declared value.",F1:"CSS styles prevent the line-height to be above the minimum value."}},"QW-ACT-R69":{name:"Word spacing in style attributes is not !important",description:"This rule checks that the style attribute is not used to prevent adjusting word-spacing by using !important, except if it's at least 0.16 times the font size.",results:{I1:"No test targets found.",P1:"The word-spacing property is not !important.",P2:"The word-spacing is at least 0.16 times the font-size.",P3:"The cascaded word-spacing is not the declared value.",F1:"CSS styles prevent the word-spacing to be above the minimum value."}},"QW-ACT-R70":{name:"iframe with negative tabindex has no interactive elements",description:"This rule checks that `iframe` elements with a negative `tabindex` attribute value contain no interactive elements.",results:{I1:"No test targets found.",P1:"The nested browsing context does not include elements that are visible and part of the sequential focus navigation.",F1:"The nested browsing context includes elements that are visible and part of the sequential focus navigation."}},"QW-ACT-R71":{name:"`meta` element has no refresh delay (no exception)",description:"This rule checks that the `meta` element is not used for delayed redirecting or refreshing.",results:{I1:"No test targets found.",P1:"The test target refreshes/redirects immediately.",F1:"The test target refreshes after {seconds} seconds.",F2:"The test target redirects after {seconds} seconds."}},"QW-ACT-R72":{name:"First focusable element is link to non-repeated content",description:"This rule checks that the first focusable element is a link to non-repeated content in the page",results:{I1:"No test targets found.",W1:"Check that the first focusable element has an accessible name that communicates that it skips content",W2:"Check that the first focusable element skips to the main content and its accessible name communicates so.",F1:"The first focusable element is not keyboard actionable.",F2:"The first focusable element is not in the accessibility tree.",F3:"The first focusable element does not have the role of link.",F4:"The first focusable element does not skip to the main content.",F5:"The page does not have focusable elements."}},"QW-ACT-R73":{name:"Block of repeated content is collapsible",description:"This rule checks that repeated blocks of content are collapsible.",results:{I1:"No test targets found.",P1:"The page doesn't have repeated content.",W1:"For each block of repeated content in each test target, which is before (in the flat tree) at least one node of non-repeated content after repeated content, check that all the following are true: - there exists an instrument to make all nodes in this block not visible; and - there exists an instrument to remove all nodes in this block from the accessibility tree."}},"QW-ACT-R74":{name:"Document has an instrument to move focus to non-repeated content",description:"This rule checks that there is an instrument to move focus to non-repeated content in the page.",results:{I1:"No test targets found.",P1:"The page doesn't have repeated content.",W1:"The page has one or more instrument(s) to move focus. Check if any of these instrument(s) is being used before a block of repeated content, and the focus is moved to just before a block of non-repeated content.",W2:"Check if the page has any instrument(s) to move focus. Check if any of these instrument(s) is being used before a block of repeated content, and the focus is moved to just before a block of non-repeated content."}},"QW-ACT-R75":{name:"Bypass Blocks of Repeated Content",description:"This rule checks that each page has a mechanism to bypass repeated blocks of content.",results:{I1:"No test targets found.",P1:"The rule passed because of the rule ",W1:"The rule can't tell because of the rule ",F1:"The rule failed because of the rule "}},"QW-ACT-R76":{name:"Text has enhanced contrast",description:"This rule checks that the highest possible contrast of every text character with its background meets the enhanced contrast requirement.",results:{I1:"No test targets found.",P1:"Element has contrast ratio higher than minimum.",P2:"Element doesn't have human language text.",P3:"Element has gradient with contrast ratio higher than minimum.",W1:"Element has text-shadow that needs manual verification.",W2:"Element has an image on background.",W3:"Element has an gradient that we can't verify.",F1:"Element has contrast ratio lower than minimum.",F2:"Element has gradient with contrast ratio lower than minimum."}},"QW-ACT-R77":{name:"ARIA required ID references exist",description:"This rule checks that every ID reference required by WAI-ARIA exists.",results:{I1:"No test targets found.",P1:"Referenced element exists.",F1:"Referenced element does not exist."}}},"wcag-techniques":{"QW-WCAG-T1":{name:"Providing text alternatives for the area elements of image maps",description:"This technique checks the text alternative of area elements of images maps",results:{I1:"No test targets found.",W1:"Please verify that the `alt` attribute describes correctly the corresponding area of the image.",F1:"The `alt` attribute doesn't exist or is empty ('')."}},"QW-WCAG-T2":{name:"Using caption elements to associate data table captions with data tables",description:"This technique checks the caption element is correctly use on tables",results:{I1:"No test targets found.",W1:"Please verify that the `caption` element identifies the table correctly.",F1:"The `caption` element d